This is an Emacs 24+ theme inspired by the Astro design system. The idea came out of a necessity for a pleasant light theme with org-agenda customizations and overall matching light colors and readable fonts. Currently there's only the light version of this theme. The dark version is planned for the near future.
Download cosmos-theme.el to the directory ~/.emacs.d/themes/. Add this to your .emacs (or init.el):
(add-to-list 'custom-theme-load-path "~/.emacs.d/themes/")
Now you can load the theme with the interactive function load-theme like this:
M-x load-theme RET cosmos
Alternatively, you can run M-x customize-themes and choose cosmos from the list of themes that appear there.
You will need to install the Lato, Poppins and Roboto fonts in your system for the theme to work properly.
To load this theme automatically on Emacs startup, add this to your init.el:
(load-theme 'cosmos t)
Fork this repository, hack on the theme and open a pull request.